| Numéro |
J. Phys. IV France
Volume 114, April 2004
|
|
|---|---|---|
| Page(s) | 147 - 148 | |
| DOI | https://doi.org/10.1051/jp4:2004114035 | |
J. Phys. IV France 114 (2004) 147
DOI: 10.1051/jp4:2004114035
13C-NMR study of the S = 1/2 antiferromagnetically coupled spin chain compound
![${[PM{\cdot}Cu(NO_3)_2{\cdot}(H_2O)_2]_{\textit{n}}}$](/articles/jp4/abs/2004/02/jp4114035/img1.gif)
under pressure
A.U.B. Wolter1, 2, 1, P. Wzietek1, S. Süllow1, F.J. Litterst1, P. Auban-Senzier2, D. Jérome2, R. Feyerherm3 and H.-H. Klauss1
1 Institut für Metallphysik und Nukleare Festkörperphysik, TU Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany
2 Laboratoire de Physique des Solides, Bât. 510, Université Paris Sud, 91405 Orsay Cedex, France
3 Hahn-Meitner-Institut, 14109 Berlin, Germany
Abstract
We present an investigation of the
S=1/2 antiferromagnetically coupled Heisenberg
spin chain [ PM
Cu(NO
3)
2
(H
2O)
2]
n (PM = pyrimidine =
C
4N
2H
4) with field-induced gap by means of
13C-NMR experiments.
From the measurements of NMR shift
and spin-lattice relaxation rate
1/T
1 we extract the magnetic exchange
parameter J/k
B
and the size of the spin gap
as function of pressure.
The observed
pressure response is discussed in comparison to related molecular materials.
Key words. NMR, hydrostatic pressure, 1-D HAF, field-induced spin gap
© EDP Sciences 2004